I'm sure some SoX (http://sox.sourceforge.net/Main/HomePage) sorcery can do it. Quoting from the SoX documentation, under 'Input File Combining': [...] f the `merge' combining method is selected, then two or more input files must be given and will be merged together to form the output file. The number of channels in each input file need not be the same. A merged audio file comprises all of the channels from all of the input files; [...] Bests, Lorenzo -------- Original Message -------- Subject: Command line to combine stereo WAV into 4-channel WAV? From: Ken Restivo <ken@xxxxxxxxxxx> To: linux-audio-user@xxxxxxxxxxxxxxxxxxxx Date: 02/12/2009 7.21 > Is there a bit of command-line-fu that could be used to combine two 2-channel WAV files into a single 4-channel WAV file? In batch (I have a bunch of these to convert). > > I suppose I could load up Ardour, import the files into Ardour, make tracks for them, place them on the tracks, set my start and end markers, then export a mix.... btu there has to be a one-liner somewhere (sox? sndfile-convert? something?) that'll just do it. > > Thanks. > > -ken > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user > > _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user